Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6236140 | Piezoelectric vibration device | — | 2001-05-22 |
| 5952898 | Surface mounting piezoelectric filter with a shield electrode on a package partition wall | Hozumi Nakata | 1999-09-14 |
| 5939956 | Multiple-mode piezoelectric filter with acoustic and electromagnetic separation between stages | Kimonori Kawano | 1999-08-17 |